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astro-ph.GA2026
The Celestial Reference Frame at K Band: The CRF-K-2025 Catalog
David Gordon, Aletha de Witt, Christopher S. Jacobs +10
We present an updated K band (24 GHz) celestial reference frame (CRF) constructed from 3.5 million Very Long Baseline Interferometry (VLBI) observations collected during 211 observ…
astro-ph.HE2026
The Astro2Geo Project I. Radio astrometric offsets correlated with Gamma-ray brightness
Jeffrey A. Hodgson, Hana Krasna, Aletha de Witt +2
Precision geodesy relies on the stability of the International Celestial Reference Frame (ICRF), yet its reference sources, Active Galactic Nuclei (AGN), exhibit changes in source…